I'm developing a private site for a customer (only accesible by loggin in) and I would like to make the RSS feed only accesible by MailChimp.

I know how to take the feed out of the auth_redirect and is_user_logged_in function, but I don't know how to make that specific URL only accesible by MailChimp (if there's a way)

  • What about creating a new feed with a "secret" slug and give that to MailChimp ? – birgire Feb 5 '18 at 13:00
  • It's a possibility, but it would be open to everyone else as well. If there is no way to limit the access to mailchimp, I will sure use your idea!! – Enzo Feb 5 '18 at 13:06
  • Going more specific than that would require details on MailChimp setup/fetching API. For example if MailChimp supports http authorization or other kind of auth with e.g. rest api, xml-rpc etc. – birgire Feb 5 '18 at 13:13
  • They just fetch the data via RSS, that's why I thought that limiting the access to /feed/ from certain URL would be enough. But I just can't figure out how to do that. – Enzo Feb 5 '18 at 14:09
  • use a public RSS feed with MailChimp. says here in the MailChimp's KB. – birgire Feb 5 '18 at 15:22

Finally, the solution has been, as birgire pointed out, creating a custom feed and only allowing access to that URL:

// Create new feed
add_action('init', 'customRSS');
function customRSS(){
    add_feed('supersecretfeed', 'customRSSFunc');

function customRSSFunc(){
    get_template_part('rss', 'supersecretfeed');

Then, as the site is private, I had to allow public access to that specific URL, adding the is_feed option:

// Ban non logged users
function protect_whole_site() {
    if(! is_page( 'wp-login.php' ) && ! is_feed('supersecretfeed') && ! is_user_logged_in() ) {

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